//function to check the email id
function isEmail(strVal)
{
	var i = strVal.indexOf("@")
	var strTemp
	strVal=strVal.toLowerCase();
	if((i=strVal.indexOf(".com",i))>0)
		strTemp = /^[a-z]([a-z_0-9\.])*[a-z0-9]+@([a-z0-9])(([a-z_0-9\.\-]){1,}([a-z0-9])+)*.com$/
	else
		strTemp = /^[a-z]([a-z_0-9\.])*[a-z0-9]+@([a-z0-9])((([a-z_0-9\-]){1,}\.([a-z0-9])+)*)*$/
	return (strTemp.test(strVal))?true:false;
}

function isAlphaNum(chrVal)
{
   if ( (chrVal>='A' && chrVal<='Z') || (chrVal>='a' && chrVal<='z' ) || (chrVal>='0' && chrVal<='9') || chrVal=='_')
      return 1;
   return 0;
}

function isPassword(passVal,j)
{
	if (passVal.length<j) return false;
	if ( isAlphaNum(passVal.charAt(0))==0 || passVal.charAt(0)=='_') return false;
	for (var i=1;i<passVal.length-1;i++)
		{
			if(isAlphaNum(passVal.charAt(i))==0) return false;
			if (isAlphaNum(passVal.charAt(passVal.length-1))==0 || passVal.charAt(passVal.length-1)=='_') return false;
		}
	return true;
}

// Function to check for valid URL
function isURL(urlValue)
{
  httpPos=urlValue.indexOf("http://");
  if ( httpPos==-1 ) httpPos=urlValue.indexOf("HTTP://");
  if ( httpPos>0 )   return false; 
  wwwPos=urlValue.indexOf("www.");
  if ( wwwPos==-1 )   wwwPos=urlValue.indexOf("WWW.");
  wwwPos1=0; 
  if ( httpPos==0 )  wwwPos1="http://".length  
  if ( wwwPos!=wwwPos1 )  return false;      
  if ( urlValue.indexOf("..",wwwPos)>0 )  return false;        
  sChar="!#$%^&*()+=|`~?<>,; "
  for ( i=0;i<sChar.length;i++ )
      if ( urlValue.indexOf(sChar.charAt(i))>=0 )
          return false;
  return true;
}